Bic Sport Hybrid
Exocet Pacer and Pacer Pro
Mistral Prodigy
Neil Pryde RS:X
Neil Pryde RS:One
Starboard Phantom 295 AST
Surfers Group Hybrid Race One
For full details of these boards and to see the full production boards list: http://www.sailing.org/tools/documents/RaceboardCompleteList-[1006].pdf
Note - there are older models registered with ISAF that may also be raced in the R310 division.